of detroit



E. W. ROBERTS April 19, 1932. VALVE ASSEMBLY Re. 18,430

Original Filed Nov. 19, 1928 b 7/4 4 lerd fzaera fs ATTORN EY's ReissuedApr. 19, 1932 UNITED STATES PATENT? FOFFICFE EARL W. ROBERTS, OFDETROIT, MICHIGAN, ASSIGNOR TO ROBERTS BRASS MANU- FACTURING COMPANY, OFDETROIT, MICHIGAN, A CORPORATION OF MICHIGAN VALVE ASSEMBLY Original No.1,838,870, dated December 29,- 1931, Serial No. 320,477, filed November19; 1928. Application for reissue filed February 12, 1932. Serial No.593,934.

This invention relates generally to valve assemblies, especially gascocks of the rotary plug type and consists of certain novel features ofconstruction, combinations and arrangements of parts that will behereinafter more fully described and particularly pointed out in theappended claims.

Heretofore the rotary plugs of gas coclrs have been providedintermediate of their ends with transversely extending bores or passagesthat registered with similar inlet and outlet ports or passages atdiametrically opposite sides of the plug casings, and the flow of thegas from the inlet passage to the outlet passage was regulated solely bythe position of the plug passage with respect to said inlet and saidoutlet passages. When a low flame was desired the'plug hadto be rotatedblindly to the proper point. In use it frequently happened that the plugwas turned too far toward closed position and consequently the lightwent out. Moreover it was 'difiicult to remember the proper polnt towhich the plug should be rotated to obtain the desired low flame.Oftentimes the same or proper point was not reached and flames ofirregular depth and size were consequently obtained. 7

With the present invention, however, the objectionable features justmentioned have been obviated. With my construction a high flame and alow flame is obtained by the rotation of the plug, and the low flame isalways uniform. The change from high to low or vice versa may be easilyand quickly accomplished, in fact an eighth of a turn of the plug willreduce the flame to any desired point. Moreover the size of the lowflame may be varied by means of a suitable regulating needle on the plugcasing. Thus my valve assembly possesses exceptional utility, especiallywhen used in connection with solid top ranges where the flame is hiddenfrom View.

In the accompanying drawings:

Figure 1 is a perspective view of a valve assembly embodying myinvention with portions of the valve casing broken away and showing thetransverse passage in the plug registering with the inlet and outletports in the casing.

Figure 2 is'a view similar to Figure 1 but showing the transversepassage in the plug registering with the inlet port and by-pass.

Figure 3 is a sectional view taken on the line 33 of Figure 6. V

Figure 4 is a detail perspective view of th washer 14:.

Figure 5 is a detail perspective view of the washer 11.

Figure 6 is a side elevation of the valve with a part thereof insection.

Figure 7 is a horizontal sectional view through the valve with a part inelevation.

' Referring now to the drawings, 1 is a valve casing having laterallyopening inlet and outlet ports 2 and 3 respectively and an intermediaterestricted by-pass 4,; 5 is a rotary plug in the casing 1 and havingstem extensions 6 and 7 at its opposite ends projecting above and belowthe valve casing, and having a transverse passage or bore 8 intermediateof its ends adapted to register with the inlet and of the plug 5 inopposite directions and thereby cause the transverse passage 8 thereinto be alternately in and out of registration with the inlet and outletports 2 and 3 and with the inlet port 2 and by-pass 4:; 14 is a latchwasher freely surrounding the stem 6 and having slots 15 and 16 atdiametrically opposite points receiving the lugs 9 and 10; 17 and 18respectively are nuts threaded upon the stem 6 at the lower end thereof,and 19 is av coil spring surrounding the stem 6 between the uppermostnut 17 and the stop washer l1 and pressing the washers 11 and 14upwardly and retaining the same in operative position with respect tothe valve casing and depending lugs 9 and 10 thereof.

As shown the by-pass 4 is V-shape in form with the branch 20 thereofopening into the central longitudinal bore 21 of the valve casing forregistration with the passage 8 in the plug 5 when the latter is inanintermediate position, and withthe branchx22 thereof opening into theoutlet port 3. Thus when the passage 8 in the plug 5 registers with thebranch 20 of the by-pass 4 the fluid entering theinl'et port 2 ofthecasing willfiow through the passage 8 in the plug into the by-pass 4 andthence into the outlet port 3. When the lug is in thisposition direct.communication between the inlet andloutl-et ports. 2 and 3 is cut off.However the passage 8 still communicates with the inlet port 2 asclearly illustrated in Figure 3 of the accompanying drawings. Thus whenthe assembly is used as a gas cock, theflow of gas to the outlet port 3may be either high or low or entirely out 01f depending upon theposition of the plug 5 and passage 8 therein with respect to the ports 2and 3and by-pass 4.

With the present construction the flow of gas thru the by-pass 4' iscontrolled by an adjusting needle 23 that threadedly engages the wallsof the passage 24 at the apex of the V-shaped by-pass. Preferably th1spassage 24 is in line with the branch 20 of the by-pass so that theouter end 26 of said branch constitutes a valveseatfor the pointed innerend 27 of the adjusting needle 23-. Thus the passage-24 constitutes aportion of the by-pass 4 and theflow of gas thruthisby-pass from theinlet branch 20 to the outlet branch 22 may be easily and quicklyregulated by adjusting the needle 23 toward and away from the seat 26. sThe latch Washer 14 abuts the lower end of the casing. 1 andis providedat diametrically opposite points thereof with depending V- shapedprojections or depressed portions 29 and 30 that areeng-ageable withcorrespondingly shaped recessesor grooves 31 and 32 in the upper face ofthe stopwasher 11. Preferably these depressions 29 and 30 are in a planeat right angles to the plane of the lugs 9 and 10 and the grooves 31 and32' are in the plane of the shoulders 33 and 34 provided by thesegmental recesses l2and 13 in the stop washer 11 so that the grooves 31and 32 will be engaged by thedepressions 29 and 30 when the. passage 8in the plug 5- registers with the i-n-letport 2' and by-pass 4.

In use the plug 5 may be turned freely by a suitable operating handle 35carried by the stem 7 to fully open or closed positions yet is capableof being automatically and efl 'ectively held in the intermediateby-pass registering; position by the engagement of the depressions 29and 30 with the grooves 31 and 32. Even in fully open or closedpositions the frictional engagement between the depressions 29 and 30-and the upper fiat face of the stop washer ll caused by the upwardspring 19 pressure is such that the plug 5 will be effectively held inadjusted position.

Thus from the foregoing description it will be readily apparent that Ihave provided a very practical and useful valve assembly in which theflow of gas may be regulatedto produce uniform high and low' flames andin which the size or depth of the low flame may be definitely variedasdesired; It will also be apparent that the arrangement of washers willeffectively and accurately hold the plug in the desired position towhich it is rotated.

The retaining means herein shown and described is claimed in my priorapplication Serial No. 320,476 filed November 19', 1928, now Patent1,832,426. I I

While it is believed that from the foregoing description, the nature andadvantages of the invention will be readily apparent, I desire to haveit'understood thatI do not limit myself to what is herein shown anddescribed and that such changes may be resorted to when desired as fallwithin the scope of what is claimed.

What I claim as my invention is:

1. A valve assembly including a casing having a longitudinallyextending" bore, transversely extending inlet and outlet passagesprojecting laterally from said bore, an outwardly opening socketextending transversely of'the casing and a substantially V-shapedby-pass extending transversely of the casing with the apex of the Vopening into the inner end of the socket and with the two branches ofthe'V opening into the bore and outlet passage respectively, one ofsaid. branches being in alignment with the socket and disposedsubstantially axially thereof, and a casing with the apex of the Vopening into the inner end of the socket and with the two branches ofthe V in communication with the bore andoutlet passage respectively, oneof said branches being in alignment with the socket and disposedsubstantially axially thereof, and a valve adjustable in the socket inalignment with and adapted to close'the last mentioned branch.

3. A valve assembly including a casting constituting a casing and havinga bore for a movable valve, inlet and outlet passages in communicationwith said bore, and a by-pass between the bore and outlet passageincluding an outwardly opening socket in one sided the casting, and asubstantially V-shaped pasvalve adjustable in the socket in alignmentsage extending inwardly from the inner end of said socket with the apexof the V opening into the inner end of the socket and with the twobranches of the V in communication with the bore and outlet passage, oneof said branches being in alignment with the socket and disposedsubstantially axially thereof, and a valve adjustable in the socket inalign ment with and adapted to close the last mentioned passage.

In testimony whereof I aifix my signature.

EARL W. ROBERTS.

